var express = require('express');
var path = require('path');
var favicon = require('serve-favicon');
var logger = require('morgan');
var cookieParser = require('cookie-parser');
var bodyParser = require('body-parser');
var flash = require('connect-flash');
var session = require('express-session');
var index = require('./routes/index');
var users = require('./routes/users');
var data = require('./routes/data');
var comment = require('./routes/comment'); //评论模块

var app = express();


// view engine setup
app.set('views', path.join(__dirname, 'views'));
app.set('view engine', 'ejs');

// uncomment after placing your favicon in /public
//app.use(favicon(path.join(__dirname, 'public', 'favicon.ico')));
app.use(logger('dev'));
app.use(bodyParser.json());
app.use(bodyParser.urlencoded({ extended: false }));
app.use(cookieParser());
app.use(express.static(path.join(__dirname, 'public')));

app.use(session({
    secret: 'recommend 128 bytes random string',
    cookie: { maxAge: 20 * 60 * 1000 }, //单位是毫秒
    resave: true, // 如果来了一个新的请求，不管原来在不在，重新存储一个
    saveUninitialized: true // 存储一些未初始化的session
}))

app.use('/', index);
app.use('/users', users);
app.use('/data', data);
app.use('/comment', comment); //comment 指向 comment

app.use(flash());

// catch 404 and forward to error handler
app.use(function(req, res, next) {
    var err = new Error('Not Found');
    err.status = 404;
    next(err);
});

// error handler
app.use(function(err, req, res, next) {
    // set locals, only providing error in development
    res.locals.message = err.message;
    res.locals.error = req.app.get('env') === 'development' ? err : {};

    // render the error page
    res.status(err.status || 500);
    res.render('error');
});

module.exports = app;